Krittanai Sajjapongse

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About

Krittanai Sajjapongse is a robotics researcher whose work bridges autonomous field operations and energy-efficient manipulation. His early contributions to search and rescue robotics are exemplified by the **Plasma-RX** project (2009, 8 citations), which developed a team of autonomous rescue robots equipped with differential drive tracks, front/rear flippers, and serial-link arms. These robots integrated a sophisticated sensor suite—including thermopile arrays, CO2 sensors, and microphones—to navigate and detect victims in complex urban disaster environments, demonstrating a pioneering approach to multi-robot coordination under real-world constraints. More recently, Sajjapongse has focused on **gravity compensation for robotic manipulators**, a critical step toward safer, more sustainable human-robot collaboration. His 2024 paper (4 citations) introduces a **single-spring mechanism** that passively counteracts gravity in multi-DOF manipulators, dramatically reducing the power requirements for heavy, rigid robotic arms. This innovation addresses the growing demand for eco-friendly, lightweight, and power-efficient robots that can work alongside humans without compromising safety or payload capacity. With a career spanning foundational autonomy in rescue robotics to cutting-edge mechanical design for collaborative systems, Sajjapongse’s work has laid groundwork for both life-saving field robots and the next generation of energy-conscious industrial manipulators.